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+# Grade 3 Learning Studio
+
+A private, browser-only Grade 3 curriculum showcase built from the verified local Core Knowledge collection. It catalogs every downloaded Grade 3 archive, exposes original teacher-guide/student PDFs without duplicating them, and includes a 10-minute interactive equal-groups math session.
+
+## Run locally
+
+```bash
+cd ~/brain/projects/ckmath-interactive-pilot
+python3 server.py --port 8899
+```
+
+Open `http://127.0.0.1:8899`. The server is deliberately loopback-only and does not expose the curriculum on the home network.
+
+See `DEMO.md` for Alicia’s short walkthrough.
+
+## Privacy
+
+This showcase uses no login, AI service, analytics, or learner-data storage. The original curriculum assets remain inside `/Users/adolforeyna/Downloads/CoreKnowledge_Grades_1-5_EN_ES`; the server streams a selected original PDF only after a locally generated, catalog-known material ID is requested.
+
+## Source and license
+
+The catalog is derived from the verified downloaded Core Knowledge Grade 3 archive set. The interactive session is adapted from *CKMath Grade 3, Unit 1: Introducing Multiplication*, Core Knowledge Foundation, Lesson 9 (“Equal Group Situations”), downloaded from [Core Knowledge](https://www.coreknowledge.org/download-free-curriculum/).
+
+The sampled math source PDF carries a Creative Commons **Attribution–NonCommercial–ShareAlike 4.0 International** notice. This pilot is private and non-commercial. Any future sharing must retain attribution, the license notice, and the same ShareAlike terms. Confirm the license embedded in every additional unit before adapting it.